Smart Summarizer

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  Summary

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  popup

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  chrome-extensions

Inspiration

As someone who often reads long articles and research papers online, I wanted a quick way to grasp the main ideas without spending too much time. That inspired me to build Smart Summarizer, a simple yet powerful Chrome extension that automatically summarizes any webpage using Chrome’s built-in AI features.

What it does

Smart Summarizer lets users instantly generate short, meaningful summaries of webpages. It uses Chrome’s experimental AI Summarizer API if available, and automatically switches to an offline text summarization algorithm when not. The result is a smooth, one-click summarization experience that works on most sites.

How I built it

I built the extension using HTML, CSS, and JavaScript with Manifest V3.
I used the chrome.scripting API to extract webpage text and integrated Chrome’s built-in AI capabilities. Since the AI API isn’t available in all Chrome versions, I also implemented a fallback extractive summarizer using word frequency scoring and sentence ranking for offline use.

Challenges I ran into

The biggest challenge was that the ai.summarizer API isn’t supported in the stable version of Chrome, which initially caused errors. I also had to find a way to clean the page text and make the fallback summarizer give meaningful results without using any external library.

Accomplishments that I'm proud of

• Built a working Chrome extension from scratch on my own.
  
• Implemented a dual-mode system (AI + offline) that ensures it always works.
  
• Designed a clean, minimal UI that’s easy to use.
  
• Completed everything within a few hours of focused work.

What I learned

I learned how Chrome extensions work internally with Manifest V3, scripting, and experimental AI APIs.
I also understood how simple NLP-based summarization techniques can be used effectively without any heavy model or backend.

What's next for Smart Summarizer

Next, I plan to integrate Gemini API or OpenAI API for more human-like summaries, add voice summary playback, and publish it on the Chrome Web Store so anyone can use it easily.

Built With

• built-in-ai-summarizer-api
• chrome
• chrome-extensions-api-(manifest-v3)
• chrome-scripting-api
• css3
• html5
• javascript
• nlp-(extractive-summarization)